Paper transportation device

Abstract

A paper transportation device includes a paper guide body, which forms an inner guide surface of a transportation path, side frames on which a shaft of a transportation member disposed in the transportation path for transporting an original document is mounted and a gear shaft of a drive transmitting gear, which is provided in a standing condition on the side frames and transmits rotation of a drive source to the shaft of the transportation member. The paper guide body, the side frames and the gear shaft are formed integrally by resin.

1. A paper transportation device comprising:
 a paper guide body, which forms an inner guide surface of a transportation path; 
 side frames on which a shaft of a transportation member disposed in the transportation path for transporting an original document is mounted; 
 a gear shaft of a drive transmitting gear, which is provided in a standing condition on the side frames and transmits a rotation of a drive source to the shaft of the transportation member, 
 wherein the paper guide body, the side frames and the gear shaft are formed integrally by resin, and 
 wherein a charge elimination guide formed of an electrically conductive member is disposed on the paper guide body, and the charge elimination guide forms a guide surface downstream of a turning part of the transportation path having a sideways letter-U shape; and 
 an elastic film which is an outer guide surface downstream of the turning part of the transportation path having the sideways letter U-shape, is provided facing the charge elimination guide and guides transported paper so that the transported paper makes contact with the charge elimination guide, 
 wherein the elastic film slants upwards from a scanning position towards a downstream side. 
 
   
   
     2. A paper transportation device comprising:
 a paper guide body, which forms an inner guide surface of a transportation path; 
 side frames on which a shaft of a transportation member disposed in the transportation path for transporting an original document is mounted; 
 a gear shaft of a drive transmitting gear, which is provided in a standing condition on the side frames and transmits a rotation of a drive source to the shaft of the transportation member, 
 wherein the paper guide body, the side frames and the gear shaft are formed integrally by resin, 
 wherein the gear shaft is supported by a tip end of the gear shaft being fit in a supporting hole of a bracket, which supports the drive source, in a manner that there is play between the tip end of the gear shaft and the supporting hole, and 
 wherein a charge elimination guide formed of an electrically conductive member is disposed on the paper guide body, and the charge elimination guide forms a guide surface downstream of a turning part of the transportation path having a sideways letter U-shape; and 
 an elastic film which is an outer guide surface downstream of the turning part of the transportation path having the sideways letter U-shape, is provided facing the charge elimination guide and guides transported paper so that the transported paper makes contact with the charge elimination guide, 
 wherein the elastic film slants upwards from a scanning position towards a downstream side. 
 
   
   
     3. A paper transportation device, comprising:
 a guide plate disposed at a guide surface, the guide plate slanting upwards from a scanning position towards a downstream side, wherein the guide plate is disposed slanting upwards towards a diagonally downstream side from the guide surface to another guide surface, 
 wherein the another guide surface is slanting upwards from the scanning position towards the downstream side; and 
 a free end of the guide plate inclined elastically to the guide surface. 
 
   
   
     4. The paper transportation device according to  claim 3 , wherein an inner guide surface slanting upwards from the scanning position is a charge elimination guide, and an outer guide surface is the guide plate inclined downwards. 
   
   
     5. The paper transportation device according to  claim 3 , wherein the free end of the guide plate is disposed in close contact with a charge elimination guide that is the another guide surface. 
   
   
     6. The paper transportation device according to  claim 3 , wherein the free end of the guide plate is disposed by maintaining a gap from a charge elimination guide that is the another guide surface. 
   
   
     7. The paper transportation device according to  claim 3 , further comprising a document tray to feed original documents. 
   
   
     8. The paper transportation device according to  claim 7 , further comprising a paper feeding member to feed the original documents from the document tray. 
   
   
     9. The paper transportation device according to  claim 3 , further comprising a transportation path having an entrance. 
   
   
     10. The paper transportation device according to  claim 7 , further comprising a scanner to scan the original documents. 
   
   
     11. The paper transportation device according to  claim 3 , further comprising a discharge tray to discharge paper.